Emission characteristics of biomass combustion under oxyfuel conditions

ABSTRACT

The purpose of this paper was to study the emission of three important pollutants (NO, SO₂, and H₂S) during the combustion process. The process was carried out in a counterflow fixed bed system, which consisted of a feeding system, a filtering system, a thermocouple, a fixed counter flow bed and an air compressor. Results were showed that the increased oxygen ratio leads to NO and H₂S decrease and an increase in reaction heat and CO₂ declines. As a result, the particle size is not much effective in CE because particle size change does not change gas composition. Particle size is effective in combustor hydrodynamics because the change in particle size is responsible for the change in combustor size and length.

KEYWORDS:

• Biomass
• combustion
• H₂S
• NO
• particle size
• SO₂

Acknowledgments

1. 2017 Liaoning institutions basic research project-Study on the corrosion mechanism and arc spraying protection of heating surface in the boiler (No. LYB201701);

2. Shenyang double hundred engineering-Major technology transformation projects - Ultra clean emissions of biomass energy technology transformation (No. Z17-5-062).